Are yams and sweet potatoes the same?
xeroradiograph xe·ro·ra·di·o·graph (zēr'ə-rā'dē-ō-grāf')
A radiograph that is produced by xeroradiography. Also called xerogram.
xeroradiography xe·ro·ra·di·og·ra·phy (zēr'ə-rā'dē-ŏg'rə-fē)
A dry photographic or photocopying process in which a negative image formed by a resinous powder on an electrically charged plate is electrically transferred to and thermally fixed as positive on a paper or other copying surface. Also called xerography.